Unable to access Grid Manager due to ERR_CONNECTION_REFUSED service servermanager start command on primary admin node returns servermanager not initialized /var/local/log/servermanager.log in primary ...Unable to access Grid Manager due to ERR_CONNECTION_REFUSED service servermanager start command on primary admin node returns servermanager not initialized /var/local/log/servermanager.log in primary admin node indicates Possible network isolation: Node has no contact with other nodes. servermanager | Killing startNode.sh process for servermanager stop: 6843 ip neighbor show from system-commands.txt indicates that primary admin node cannot connect to other grid nodes